/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone {
  public static void main (String[] args) throws java.lang.Exception {
    Integer input = Integer.parseUnsignedInt("FD00", 16);
    System.out.println(Integer.toHexString(input));
 
    Integer reversedBits = Integer.reverse(input);
    System.out.println(Integer.toHexString(reversedBits));
 
    Integer reversedBytes = Integer.reverseBytes(input);
    System.out.println(Integer.toHexString(reversedBytes));
  }
}

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